--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4525662149 dns-udp-queries-received-ipv6: 401855670 dns-tcp-queries-received-ipv4: 106392714 dns-tcp-queries-received-ipv6: 12972408 dns-udp-responses-sent-ipv4: 4523481389 dns-udp-responses-sent-ipv6: 401830005 dns-tcp-responses-sent-ipv4: 107159885 dns-tcp-responses-sent-ipv6: 13115761